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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <windows.h>
#include "mozilla/ipc/SharedMemory.h"
namespace mozilla {
namespace ipc {
void SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights) {
if (!SystemProtectFallible(aAddr, aSize, aRights)) {
MOZ_CRASH("can't VirtualProtect()");
}
}
bool SharedMemory::SystemProtectFallible(char* aAddr, size_t aSize,
int aRights) {
DWORD flags;
if ((aRights & RightsRead) && (aRights & RightsWrite))
flags = PAGE_READWRITE;
else if (aRights & RightsRead)
flags = PAGE_READONLY;
else
flags = PAGE_NOACCESS;
DWORD oldflags;
return VirtualProtect(aAddr, aSize, flags, &oldflags);
}
size_t SharedMemory::SystemPageSize() {
SYSTEM_INFO si;
GetSystemInfo(&si);
return si.dwPageSize;
}
} // namespace ipc
} // namespace mozilla
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